delegate.html revision abf248eeaac94371535d800391168fff8d32bb44
<html>
<head>
<title>YUI Event Delegate Tests</title>
</head>
<body class="yui-skin-sam">
<div id="doc">
<div id="mod1">
<div class="hd"><h3 class="title">H3 - Title</h3></div>
<div class="bd">
<p>simple paragraph with a link <a href="#"id="firstlink">simple link</a></p>
<p>another paragraph with a complex link <a href="#" id="secondlink"><strong>strong within link</strong><img alt="fake image" id="fakeimage" /> - complex <span id="spanwithinlink">link</span></a></p>
</div>
</div>
</div>
<!-- YUI3 Core //-->
<!-- Initialization process //-->
<script type="text/javascript">
YUI({
base: "/build/",
filter: 'debug',
combine: false,
useConsole: true,
logExclude: {Dom: true, Selector: true, Node: true, attribute: true, base: true, event: true, widget: true}
}).use('console', 'test', 'event', 'event-simulate', function (Y) {
// creating the console...
(new Y.Console()).render();
// starting the testing process
// add the test cases and suites
Y.Test.Runner.add(new Y.Test.Case({
name: "Event Delegate Tests",
test_simple_delegate_for_anchors: function(){
var foo = false, t, ct, boundEl;
Y.on('delegate', function(e) {
foo = true;
t = e.target;
ct = e.currentTarget;
boundEl = e.container;
}, '#mod1', 'click', 'a');
Y.Event.simulate (document.getElementById('firstlink'), 'click');
Y.Assert.isTrue(foo, "simple delegation fails, mod1 should pickup the event and test target [firstlink]");
// Y.Assert.areEqual(t, Y.get('#firstlink'), "event delegate works but the target is an incorrect node, should be the matching node");
Y.Assert.areEqual(ct, Y.get('#firstlink'), "event delegate works but the currentTarget is an incorrect node, should be the matching node");
Y.Assert.areEqual(t, Y.get('#firstlink'), "event delegate works but the target is an incorrect node, should be the actual click target");
Y.Assert.areEqual(boundEl, Y.get('#mod1'), "event delegate works but the container property should be the bound element");
},
test_checking_delegation_target: function(){
var foo = false, t, ct, boundEl;
Y.on('delegate', function(e) {
foo = true;
t = e.target;
ct = e.currentTarget;
boundEl = e.container;
}, '#mod1', 'click', 'a');
Y.Event.simulate (document.getElementById('fakeimage'), 'click');
Y.Assert.isTrue(foo, "delegation fails for an image within an anchor, mod1 should pickup the event and test target [secondlink]");
// in this case, the target should be the anchor, and not the image
// Y.Assert.areEqual(t, Y.get('#secondlink'), "event delegate works but the target is an incorrect node, should be the matching node");
// this has been changed. the target is unchanged, the anchor is
Y.Assert.areEqual(ct, Y.get('#secondlink'), "event delegate works but the currentTarget is an incorrect node, should be the matching node");
Y.Assert.areEqual(t, Y.get('#fakeimage'), "event delegate works but the target is an incorrect node, should be the actual click target");
Y.Assert.areEqual(boundEl, Y.get('#mod1'), "event delegate works but the container property should be the bound element");
},
test_including_container_in_selector: function(){
var foo = false, t;
Y.on('delegate', function(e) {
foo = true;
t = e.target;
}, '#mod1', 'click', '#mod1 a');
Y.Event.simulate (document.getElementById('firstlink'), 'click');
Y.Assert.isFalse(foo, "delegation fails, the container (specified in the on) can not be part of the selectors");
},
test_targeting_container_without_selectors: function(){
var foo = false, t;
Y.on('delegate', function(e) {
foo = true;
t = e.target;
}, '#mod1', 'click');
Y.Event.simulate (document.getElementById('firstlink'), 'click');
Y.Assert.isFalse(foo, "delegation fails, delegation without at least one selector should never trigger an event");
},
test_multiple_selectors_one_match: function(){
var foo = false, t;
Y.on('delegate', function(e) {
foo = true;
t = e.target;
}, '#mod1', 'click', 'a,a span');
Y.Event.simulate (document.getElementById('firstlink'), 'click');
Y.Assert.isTrue(foo, "multiple selectors fails, delegate should be able to match different selectors");
Y.Assert.areEqual(t, Y.get('#firstlink'), "event delegate works but the target is an incorrect node, should be the matching selector");
},
test_multiple_delegate_matches: function(){
var foo1 = false, foo2 = false, t1, t2, ct1, ct2;
Y.on('delegate', function(e) {
foo1 = true;
t1 = e.target;
ct1 = e.currentTarget;
}, '#mod1', 'click', 'a');
Y.on('delegate', function(e) {
foo2 = true;
t2 = e.target;
ct2 = e.currentTarget;
}, '#mod1', 'click', 'a span');
Y.Event.simulate (document.getElementById('spanwithinlink'), 'click');
Y.Assert.isTrue(foo1, "first match fail, delegate should be able to match [a]");
Y.Assert.isTrue(foo2, "second match fail, delegate should be able to match [a span]");
Y.Assert.areEqual(ct1, Y.get('#secondlink'), "event delegate works but the currentTarget is an incorrect node, should be the matching selector");
Y.Assert.areEqual(t1, Y.get('#spanwithinlink'), "event delegate works but the target is an incorrect node, should be the clicked node");
Y.Assert.areEqual(ct2, Y.get('#spanwithinlink'), "event delegate works but the target is an incorrect node, should be the matching selector");
Y.Assert.areEqual(t2, Y.get('#spanwithinlink'), "event delegate works but the target is an incorrect node, should be the clicked");
},
test_bubble_up_after_delegate: function(){
var foo1 = false, foo2 = false, t1, t2, ct;
Y.on('delegate', function(e) {
foo1 = true;
t1 = e.target;
ct = e.currentTarget;
}, '#mod1', 'click', 'a');
Y.on('click', function(e) {
foo2 = true;
t2 = e.target;
}, '#doc');
Y.Event.simulate (document.getElementById('spanwithinlink'), 'click');
Y.Assert.isTrue(foo1, "first match fail, delegate should be able to match [a]");
Y.Assert.isTrue(foo2, "second match fail, the event doesn't bubble up after the delegate routine");
// changed
// Y.Assert.areEqual(t1, Y.get('#secondlink'), "event delegate works but the target is an incorrect node, should be the matching selector");
Y.Assert.areEqual(ct, Y.get('#secondlink'), "event delegate works but the currentTarget is an incorrect node, should be the matching selector");
Y.Assert.areEqual(t1, Y.get('#spanwithinlink'), "event delegate works but the target is an incorrect node, should be the actual target");
// obsolete
Y.Assert.areEqual(t2, Y.get('#spanwithinlink'), "event delegate works but it doesn't restore e.target to the original value.");
},
test_bubble_up_after_delegate_halt: function(){
var foo1 = false, foo2 = false;
Y.on('delegate', function(e) {
foo1 = true;
e.halt();
}, '#mod1', 'click', 'a');
Y.on('click', function(e) {
foo2 = true;
}, '#doc');
Y.Event.simulate (document.getElementById('spanwithinlink'), 'click');
Y.Assert.isTrue(foo1, "first match fail, delegate should be able to match [a]");
Y.Assert.isFalse(foo2, "the listener for 'doc' got executed, which means that e.halt fails during the delegate routine");
}
/*
* Other things that I consider should be tested in the future:
* - stopping the event, verifying the event ourside of the container
* - stopping the event and verify what happen with multiple matches
*/
}));
//run all tests
/* finishing the testing process */
});
</script>
</body>
</html>